diff --git a/lib/provider/immowelt.js b/lib/provider/immowelt.js
index 5e6f309..f1b50b6 100755
--- a/lib/provider/immowelt.js
+++ b/lib/provider/immowelt.js
@@ -3,7 +3,7 @@ const config = require('../../conf/config.json');
 const utils = require('../utils');
 
 function normalize(o) {
-  const size = o.size.split('Wohnfläche')[1].replace(' (ca.) ', '');
+  const size = o.size == null ? '--- m²' || o.size.split('Wohnfläche')[1].replace(' (ca.) ', '');
   const address = o.address;
 
   return Object.assign(o, { size, address });